Y
Yuichi Ohkubo
Researcher at Hitachi
Publications - 7
Citations - 44
Yuichi Ohkubo is an academic researcher from Hitachi. The author has contributed to research in topics: Voltage source & Transistor. The author has an hindex of 4, co-authored 7 publications receiving 44 citations.
Papers
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Patent
Monolithic semiconductor integrated circuit device having current adjusting circuit
TL;DR: In this article, the amplifying elements are in a current mirror circuit connection with their control electrodes being concerned with each other so that the electric current flowing in the current path between the current receiving and delivering electrodes of the Amplifying element connected to define the current flow in the differentially operative circuit section is controlled by the adjustably determined resistance of the load resistance.
Patent
Brushless motor driving apparatus
TL;DR: In this article, a brushless motor driving apparatus that includes a rotation signal output component, a half-cycle signal generator, a plurality of counters, and a duty control signal generating component is provided.
Patent
Electronic impedance circuit including a compensation arrangement for d.c. offset
TL;DR: In this paper, an electronic impedance circuit is constructed of a voltage-current converter and a variable gain current amplifier, which includes third and fourth transistors of the NPN-type differentially connected, and fifth and sixth transistors as load means.
Patent
Brushless motor driving circuit
TL;DR: In this article, a brushless motor driving circuit capable of clamping an output voltage at a proper voltage, even when a power source voltage changes, was presented, where a pre-driver circuit was used to generate a voltage for driving a motor from a source voltage by turning on/off first and second PMOS transistors.
Patent
Switchable signal compressor/signal expander
TL;DR: In this paper, a switchable signal compressor/signal expander is used to produce a D.C. reference voltage, and the output of the control amplifier is maintained at a level approximate to the reference voltage.